GATES SX-1641 Fuel Tank Gas Cap Sigma 3.0L V6

( Brand: Gates ), ( Manufacturer Part Number: SX-1641 ), ( Type: Fuel Tank Cap ), ( Placement On Vehicle: Air Fuel Delivery Hardware Fasteners Fittings ), ( Item Width: 3.630 ), ( Item Height: 3.000 ), ( Manufacturer Warranty: Recommended Service Interval ), ( Ipn: C137 47-41 ), ( Compatible Model: Sigma ), ( Compatible Year: 1990 1989 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gates Fuel Tank Cap )

Review GATES Fuel Tank Cap Mitsubishi Sigma 3.0l V6 Gas Delivery Fc fits 1989–1990

The **Gates SX-1641 Fuel Tank Cap** is a meticulously engineered, high-performance replacement part designed specifically for the **1989 1990 Mitsubishi Sigma with a 3.0L V6 fuel-injected engine**, ensuring optimal fuel system integrity and emissions compliance. Crafted from durable **high-density polyethylene (HDPE)**, this cap is built to withstand the rigors of daily driving, including temperature fluctuations, road debris, and the constant pressure of fuel system operation, while maintaining a secure seal to prevent vapor leaks. The **precision-molded design** features a **threaded metal insert** for enhanced durability and a **tight-fitting gasket**, which helps eliminate fuel vapors and maintain proper fuel pressure, critical for engine performance and emissions control. Unlike generic aftermarket alternatives, this Gates cap is **OEM-equivalent in quality**, ensuring a perfect fit with the Sigma s fuel tank and filler neck, reducing the risk of leaks or improper sealing that could lead to fuel loss or potential fire hazards. The **smooth, ergonomic grip** allows for easy installation and removal, even in tight spaces, while the **clear, tamper-evident seal** ensures the integrity of the fuel system before and after refueling. Whether you're restoring a classic Mitsubishi Sigma or maintaining a well-used vehicle, the Gates SX-1641 is the ideal choice for reliability, performance, and peace of mind, delivering the same level of quality that made Gates a trusted name in automotive aftermarket components for decades.

**Pros and Cons of buying a Gates SX-1641 Fuel Tank Cap for a 1989-1990 Mitsubishi Sigma 3.0L V6 Gas Fuel-Injected Engine**

1. **Compatibility** The Gates SX-1641 is specifically designed for the 1989-1990 Mitsubishi Sigma with a 3.0L V6 fuel-injected engine, ensuring a proper fit without modifications.

2. **Quality Construction** Gates is a well-known brand in automotive aftermarket parts, known for durable materials and reliable performance. The cap is likely made from sturdy plastic with a secure sealing mechanism.

3. **Prevents Fuel Evaporation & Vapor Loss** A properly sealed fuel cap reduces fuel evaporation, which can improve fuel efficiency and reduce emissions.

4. **Prevents Contamination** A good fuel cap keeps debris, moisture, and dirt out of the fuel tank, protecting the fuel system from clogs and corrosion.

5. **Easy Installation** Since it is an OEM replacement, it should be straightforward to install without requiring additional tools or modifications.

6. **Cost-Effective** Compared to some high-end aftermarket brands, Gates offers a balance between affordability and quality, making it a practical choice for most drivers.

7. **OEM-Level Performance** The cap is designed to meet or exceed the original equipment manufacturer s specifications, ensuring it functions as intended.

1. **Potential Counterfeit Concerns** Like many aftermarket parts, there is a risk of purchasing a counterfeit Gates product, which may not meet quality standards. Buying from a reputable seller (e.g., Amazon, RockAuto, or a trusted local auto parts store) helps mitigate this risk.

2. **Limited Customization** Since this is an OEM-style replacement, it does not offer any performance-enhancing features (e.g., improved airflow or pressure regulation) that some aftermarket alternatives might provide.

3. **Wear Over Time** Even high-quality fuel caps can degrade with age, especially if exposed to UV light or extreme temperatures. Replacement may still be necessary after prolonged use.

4. **Availability Issues** While widely available, stock may occasionally be low, requiring patience or alternative sourcing.

5. **No Additional Features** Unlike some premium fuel caps, this one does not include features like built-in fuel level indicators or enhanced sealing for high-performance applications.

The Gates SX-1641 fuel tank cap is a solid, reliable choice for your 1989-1990 Mitsubishi Sigma. It offers the necessary compatibility, durability, and functionality to maintain your vehicle s fuel system without complications. While there are minor risks (such as counterfeit products), these can be easily avoided by purchasing from trusted sources. The cap is a practical replacement that balances cost, quality, and performance, making it a recommended option for most owners.

If your current fuel cap is damaged, leaking, or missing, the Gates SX-1641 is an excellent replacement. Purchase it from a reputable seller (such as Amazon, RockAuto, or a local auto parts store with good reviews) to ensure authenticity. If you notice persistent fuel odor, fuel gauge inconsistencies, or check engine lights related to the fuel system, replacing the cap is a simple and effective first step. For long-term reliability, consider inspecting the fuel tank and lines periodically to ensure no other issues are present.

Details:

Gates Fuel Tank Cap for 1989 - 1990 Mitsubishi Sigma 3.0L V6 Gas Delivery fc: Status: In Stock.

part #: sx1641 prices

• $27.46-$90.13

specifications fueltanksysteme:

• for makes: Mitsubishi
• for years: 1989-1990
• brand: Gates
• mpn: Sx-1641
• type: Fuel Tank Cap
• placement on vehicle: Air Fuel Delivery Hardware Fasteners Fittings
• item width: 3.630
• item height: 3.000
• manufacturer warranty: Recommended Service Interval
• ipn: C137 47-41
• compatible model: Sigma
• compatible year: 1990 1989
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Gates Fuel Tank Cap

general fueltanksysteme:

• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Tanks Filler Necks
• condition: New

returns fueltanksysteme:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

shipping fueltanksysteme:

• class: Standard, Expedited
• type: Fixed
• service: Standard, Expedited
• transit: 2-6 Days
• cost: $0.00

offer fueltanksysteme:

• started: May 27, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 8

seller fueltanksysteme:

• city: Indianapolis, Indiana
• # reviews: 661747
• rating: 99.7%

payments fueltanksysteme:

• other
• wallet: Apple-pay
• credit card: Diners-club

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